Nearsightedness (Myopia). You see close objects more clearly than those at a distance.

Farsightedness (Hyperopia). You see far objects more clearly than close ones.

Astigmatism. You see blurry or distorted objects at all distances, because the front part of your eye (cornea) is slightly irregular in shape.

Presbyopia. A natural part of aging begins to blur your reading and near vision by about age 40-45 and gradually worsens.

Glaucoma. A build-up of excess fluid in your eye, causing internal pressure and damage to the optic nerve. Can result in severe vision loss and even blindness.

Cataracts. A clouding of the clear lens of your eye that distorts entering light, causing blurred or hazy vision. Can lead to blindness if not diagnosed and treated.